Ore-sampler



. (No Modem S. I. HALLETT.

ORB SAMPLER.

Patented Aug. 18, 1896.

'INVENTOH WITNESSES.

ATTORNEYS. V

ment with parts broken out.

UNITED STATES PATENT OFFICE.

SAMUEL IRVING HALLETT, OF ASPEN, COLORADO.

ORE-SAM PLER.

SPECIFICATION forming part of Letters Patent No. 566,169, dated August 18, 1896.

' Application filed August 23,1894. Serial No. 521,115. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL IRVING HAL- LETT, of Aspen, in the county of Pitkin and State of Colorado, have invented a new and Improved Ore-Sampler, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved ore-sampling machine which is comparatively simple and durable in construction, very effective in operation, and arranged in such a manner as to produce an accurate sample of the material passed through the machine.

The invention consists in certain parts and details and combinations of the same, as will be hereinafter fully described, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming partof this specification, in which similar letters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improve- Fig. 2 is a sectional plan View of the same on the line 2 2 of Fig. 1. Fig. 3 is an enlarged plan view of one of the separating-boxes. Fig. 4 is a sectional side elevation of the same on the line 4 4 of Fig. 8, and Fig. 5 is an enlarged sectional side elevation of one of the outletgates in the feed-hopper.

The improved ore-samplin g machine is provided with a conicallyshaped hopper A, formed with a square discharge-spout A,

under which is arranged a table B, having a longitudinal movement, either oscillating or reciprocating,as desired,the oscillating movement, however, being preferred, as shown in the drawings, the table being correspondingly made segment-a1 in shape. The table is provided with side flanges B, and is supported on arms B hung on a shaft B journaled in suitable bearings in the frame of the machine.

One of the arms B is connected by a pitmanv O with a crank-arm O, secured on a shaft 0 journaled in suitable bearings on the frame of the machine, the said shaft being connected by a pulley and belt with other suitable machinery for imparting a rotary motion to the said shaft 0 to cause the crankarm 0 and pitman C to impart an oscillating motion to the table B.

Into the hopper A discharges centrally a verticallydisposed pipe D, delivering the material to be treated in a conical pile E in the lower end of the hopper A, as indicated in Fig. 1, so that the ore is evenly spread and thoroughly mixed in the hopper A before it is discharged by the table B, as hereinafter more fully described.

The ends of the table B discharge a cer- 6o tain quantity of material alternately into oppositely-arranged separating-boxes F, alike in construction and each provided with compartments F F F F F F, of which the compartments F, F and F are formed with transversely-extending inclined bottoms F all leading to a common discharge-pipe G. The other compartments, F F and F, are formed with inclined longitudinally-extending bottoms F discharging into a hopper H, having an outlet-spout I-I, discharging the rejected material to one side of the machine. The two pipes G leading from the two separating-boxes F unite in a common pipe G, adapted to form a feed-pipe for a hopper A of a second machine similar to theone above described, so that the material passing through the said pipes G may be again divided in a second machine, and this may be continued in a series of machines until the desired sample is obtained.

In order to regulate the amount of ore discharged at every stroke of the table B, I provide a feed-gate I on each side of the hopper A, the said feed-gate being fitted to slide vertically on the hopper and provided with a rack I in mesh with a gear-wheel 1 secured on a transversely-extending shaft 1 journaled on the hopper A and provided on one end with a hand-wheel I adapted to be taken hold of by the operator to turn the said shaft 1 so as to raise or lower the feed-gate I to permit more or less material to be discharged at each stroke of the table B.

The operationis as follows: When the material is fed into the hopper A, and the table B is reciprocated as above described, then the material passing down is fed by its own gravity and spread over the top surface of the table in a uniform stream, the depth of which is determined by the position of the gates I.

As the ore is carried to one side by the table the material in the hopper falls down and again fills that part of the table Within the square discharge-spout A, while part of the table with its charge of ore extends to one side of the said square spout. Now when the table swings backward then the ore spread on the outside portion of the table is pushed off by the ore which has fallen down behind it within the square hopper A, so that the outer portion is discharged in a flat stream into the separating-box F. This operation is repeated alternately on opposite sides of the hopper A, so that a certain quantity of material is alternately discharged into the respective separating-boxes F. The material falling into the several compartments F F F 1 F F is divided so that the alternating compartments F, F, and F discharge into the pipe G, while the other compartments, F F,

and F discharge into the hopper I-I, delivering this rejected material to one side of the machine. The material passing down into the pipes G is again divided by a second ma chine of similar construction as above described.

I do not limit myself to the particular con struction of the table B and the means employed for imparting a rocking motion thereto, as the said table may be reciprocated under the hopper A in any desired manner.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent above the said table, the said hopper being provided with a vertically-adjustable gate to regulate the depth of the material spread on the surface of the table, a separating-box into which the material is discharged from the said table, and means for moving the said table longitudinally, whereby the material carried by the table to one side of the said spout is pushed off by the material on said table within the square spout on the return movement of the table and the material isdischarged from the table in a fiat stream, substantially as described.

2. An ore-sampler provided with a hopper, a longitudinally-movable table located beneath the hopper and on which the material is spread, means for regulating the depth of the material spread upon the table, oppositely-arranged separating-boxes into which the material is alternately discharged from the said table, and means for imparting longitudinal movement to the table, substantially as described.

3. An ore-sampler provided with an inverted conical hopper having a square discharge-pipe, a longitudinally-movable table arranged beneath the square discharge-pipe, the said square-shaped discharge-spout eX- tending approximately from side to side of the said table and a vertically-disposed pipe discharging centrally into the hopper and delivering the material in a conical pile in the lower end of the hopper upon the said longitudinally-movable table, the particles running down evenly on all sides of the pile and thus becoming evenly mixed upon the table within the square discharge-pipe and means for regulating the amount of material carried by the longitudinally-movable table from within the square discharge-pipe to one side thereof, substantially as described.

4. In an ore-sampler the combination with a longitudinally-movable table provided with 1 upwardly-extending side flanges, of a feed- 1. An ore-sampler provided with a longi- 1 tudinally-movable table, a hopper formed. with a square discharge-spout and located hopper located above the said table and having a square-shaped discharge-spout, the lower end of which extends within the side flanges of the table, the said square-shaped discharge-spout extending approximately from one side flange oi the table to the other, and a separating-box located beneath the end of the table and into which the material is discharged from the said table, substantially as described.

SAMUEL IRVING HALLETT. Witnesses CHARLES W. MILLER, J ESSE J. MAY. 

